hi can anyone explain this to me in the last week my c70 has been chucking out loads of black smoke and the engine has been running rough ive been through all the intercooler pipes the lambada sesnsor everything i could think of then today i thought only thing left would be dodgey ecu i disconected the battery left it off for ten minutes connected it again and the engine is now running really sweet and theres no smoke at all has anybody any idea wat was wrong its got me stumped thanks alot for any help mac
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